Cut the pork tenderloin into small cubes.
Finely chop the onion, green onion, and carrot.
Heat cooking oil in a pan and stir-fry the pork tenderloin until cooked.
Add the onion, green onion, and carrot and stir-fry together.
Add the rice and mix well while stir-frying.
Season with soy sauce, salt, and pepper.
Stir-fry everything evenly and transfer to a plate.